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Quote: Future lunar explorers counting on the moon to shield themselves from galactic cosmic rays might want to think about Plan B. In a surprising discovery, scientists have found that the moon itself is a source of potentially deadly radiation. Measurements taken by NASA's Lunar Reconnaissance Orbiter show that the number of high energy particles streaming in from space did not tail off closer to the moon's surface, as would be expected with the body of the moon blocking half the sky. Rather, the cosmic rays created a secondary — and potentially more dangerous — shower by blasting particles in the lunar soil which then become radioactive. "The moon is a source of radiation," said Boston University researcher Harlan Spence, the lead scientist for LRO's cosmic ray telescope. "This was a bit unexpected.

(عدل بواسطة حاتم إبراهيم on 09-10-2014, 08:44 PM)
(عدل بواسطة حاتم إبراهيم on 09-10-2014, 09:03 PM)